21329356

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18451}}^1$

素因数の和:18489

約数の個数: 18

約数和(自身を含む): 39653348

約数和(自身を除く): 18323992

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18451, 36902, 73804, 313667, 627334, 1254668, 5332339, 10664678, 21329356]

約数ペア:

[(1, 21329356), (2, 10664678), (4, 5332339), (17, 1254668), (34, 627334), (68, 313667), (289, 73804), (578, 36902), (1156, 18451)]